On laser emission in opal doped with the RHODAMINE 6G organic dye

Observations of laser emission in the globular photonic crystal doped with the Rhodamine 6G dye are conducted. The secondary emission spectra are obtained with different experiment schemes for a sample of the Rhodamine 6G dye-doped opal with globules 240 and 260 nm in diameter. It is noted in all investigated cases that the spectral band got narrow and the intensity of the secondary emission increased with respect to exciting emission, which testifies to the transfer from the spontaneous emission to the induced one. The feasibility of laser emission is also confirmed by the performed theoretical estimations.